Power shovel mechanism



Dec. 25, 1934. E, J, KANE POWER SH OVEL MECHANI SM 5 Sheets-Sheet 1Filed May 10, 1929 Dec. 25, 1934.

E. J. KANE POWER SHOVEL MECHANISM Filed May 10, 1929 3 SheetsSheet 2 Dec25, 1934. E. J. KA NE I POWER SHOVEL MECHANISM Filed May 10, 1929 3Sheets-Sheet 5 Patented Dec. 25, 1934 UNITED, STATES PATENT OFFICE 11,985,876 rowan sHovEL MECHANISM V Edmund Joseph Kane, Chicago, 11 1.Application May 10, 1929, Serial No. 361,873

5Claims. o1. 214f- 135) This invention relates to mechanism forpowershovels and cranes, and particularly to novel means for-actuating thedipper sticks of power shovels, and to means for adapting the machinefor useas a shovel or crane. v

Among other objects, the present invention is intended to provide anovel construction and arrangement-for imparting an efficient crowdingand retracting motionto the dipper stick and Another object of theinvention is to provide a novel construction and arrangement whereby themachine to which the invention is applied may be readily adapted for useas a crane or-power shovel. v i A further'object of the invention is toimprove machines of the character disclosed in sundry detailshereinafter described and particularly pointed out in the appendedclaims.

One embodiment of the invention is shown for illustrative purposes inthe accompanying drawings,in which I f Fig.1 isa side elevationof amachine equipped for use as a powershovel, "and illustrating theapplication of my-invention thereto.

Fig. 2 is an enlargedside elevation of a portion ofFig.1; H e

Fig. 3 is a sectionalview taken-"substantially as indicated by the line3 -3 of Fig.2 and showing portions .of some of the parts in elevation. Iv

Fig -4 is an elevational view taken substantially as indicated by theline4--4 of Fig.3. H Fig. 5 is a fragmentary plan View of'a portion ofthe boom shown .in Fig; 1 and-illustrating 35 the driving connection forrotating the shipper shaft and reciprocating the dipper stick,

Fig. 6 is an elevational view, partlyjin section,

of a portion of Fig. 3 illustrating means for adapting the machine foruse as a crane. J

Fig... '7 is a side elevationof the drum lagging shown in Fig. Sandillustrating the manner of securing the lagging-to the drum shaftsleeve.

Fig. 8 is a sectional elevationlthrough the drum lagging takensubstantially as indicated by the line 8, 8 of N Theillustrativeembodiment of the present invention is, shown applied to amachine equipped for use as a'powershovel which, comprises apivotedswing body lg', suitably mounted forltransportation on endless tracklaying devices 1 1, and having a suitable power unit mounted thereon,such, for example, as an internal combustion engine, designated bythe'numeral 12, from which power istransmitted by means or" a chain13,to a'main power shaft l4,"th6 l$ 19 8 i ab connections to; the track"laying devices 11, and

to the large annular ring gear 15 for swinging the body 10 about itspivot.

Pivotally mounted adjacent the forward :edge

of the swing body lojon hollow pivot 'pins or trunnicns 16 for med onbrackets ilfia is a boom 17' on which is rotatablyfmounted a shippershaft 18' having secured. thereto, at opposite sides of the boom a pairof pinions 19 adapted to co -operate with racks 20 secured toitheportions '21 of a split lor bifurcatedfldipper stick,

on the outer end of whichis suitablymounted a dipper22, the'connectionbetween the pinions "1 9 andracks 20 being such that-as theshipper shaftv is rotated in one direction or' another, the portions 2 1; of thedipper stick willbe reciprocated-longitudinally and the dipper movedoutwardly or 'inwardlywith respect tothe boom 17 according to thedirection of rotation of the shippershaft.

A cable 23, having suitable connections with the power mechanism, maybeemployed for swinging the dipper and sticks'about the shipper shaft,

and the cable 24,also'having suitable connections with the driving,means,"may be employed for swinging-the boom about its pivotalconnection I with the brackets 16a, but inasmuch as {these cables andthe pivotal ,inovement'of 'thedipper' and boom form no part of thepresent invention, their" particular". connection with the drivingmechanism has been omitted from the drawings to facilitate theshowing'ofjfeatures embodying the present invention.

.For driving the, shippershaitfin one "direction,

namely, in a direction toretract the stickjlzl and, move the dipper 22toward" the boom, fa drum shaft 25 is rotatably mountedlin'bearings =26,suitably positioned onfthe swing body 10, 'andsecured to the drum shaft25 ,"by,'meai1s of akey 27, is 'a large gear, 28 adapted to mesh with asmall pinion 29securedto the m ill pow er shaft 14 bywhich thedrumshaftq25'is continuously rotated when'the engine 12 is in operation.

Rotatably mounted on'the "drumshaft 25 1s a driving member or sleeve 3 0having a sprocket 31 formedthereon and aremovable member or sprocket 32secured thereto, I, thus forming, in

effect, a double sprocket rotatably mountedion the drum shaft25. v

Rotatably mounted. in} he 'trunnions 16 ,and concentrically with thepivotal connection of the boom 17 is a boom pivotshaft 33 to whichf issecured, adjacent its central portion,sprockets v 341, and'35 thusmakingapower transmitting or jack shaft of said 'axiaiboom pivot-shaft,f the sprocket 34 being connected by means of a chain 36 with thesprocket 31 formed on the sleeve or driving member 30, and the sprocket35 being connected by means of a chain 37 with a sprocket 38 secured tothe shipper shaft 18 adjacent its central portion.

For connecting the driving member or sleeve 30 to the drum shaft 25, thegear 28 is provided with aplurality of pivotally mounted bell cranklevers 39, to the short arms of which are operatively ,.connected@segmental .clutch bands 40 adapted to co=operate with aclutich drum41formed on the driving member or sleeve 30, while to the long arms of thebell crank levers 39-;are

connected anti-friction rollers 42 adapted to enter suitably positionedapertures 43 formed in the hub portion of the gear 28-. in amannentobeengaged by a wedge 44 slidably mounted in the end of the drumshaft125, the moving of the wedge 44 inwardly acting to move the.anti-friction rollers 42 on the long arms of the bell crank tlevers:outwardly, a :manner, to cause .thebands A0 to;grip,the.drumALandestablish-.an-operative driving connection betweenthe. .drum shaft. 25 and the drivingmemberor, sleeve 30.

For moving-,the wedge. 44,.inwardly. and ,out- .wardly of the drumshaft. 25 .inamannerto connect,.:,and disconnect-.thelsaid shaftanddriving ,member 30, amanually operateduhand. rlBVEI 45 tistsecured to.-a.,shaft 46,. rotatably .mounted .on the frame. or ,.swing. body l0,and secured to. the shaft 46,.is- \an.,arm .47.: having its. .free endconvnectedfothe-lower-endof a link 48,-the. upper 'end,,of -.whi'ch.issecured to.,.the. free end- .of an .,arm 49..connectedwith..a,shortshaft rotatably ,,mounted' in .bearingsjf carried byrthe, frame. 10,and-.secure d-;to.,the shaftc50 adjacent/one end ..thereof,.is.a.shipperfork52 operativelyconnected ,with the wedge.44. .Itwill,be.noted,in.the.pres- .entearrangement -thatas .the handdever 45 is.moved in .the .direction nof. the .arrow .53, the wedge .44 will be...forced .inwardly between the rollers .42 in .a manner.to;.establishconnectioh gbetweenthe drum shafti25andudriving member.30, and that whenthe leveris moved. to itsneu- .tral positiom shown in.Eigs. 1 ...andn2 the wedge A4,.1will ,be. withdrawn, andthe .bands..40,by, reason ..of ...the action .of springs .54, connected .to -thelevers..39, will .,be .withdrawn .from.engagement ywithlthe dru.m-.41,..thereby,.permitting .the gear Z28 toirotate .with the; shaftw25.withoutinany .way efiecting .,any v,movement of .the .Ldr-iving memberor sleeve 30.

.lIt .will,.be observed .fromthe foregoing de.s'cription..that,movement.,of the. lever.- 45 .inthe directionjndicatedby the ..arrow .53 in'. Fig. .2

.will. establish. a. connectionbetween thecontinu- .ou'sly rotating'drum.,shaft .425 ...and .the .driving member \orssleeve 30, ...and ;thatthrough \the ,spro'cket .31, .;chain .36, sprocket x34,v shaft 33,

.sp1'.ocket.35,..chain -3 land sprocket .38, the. shipperShaft.willbe'rotated. ina. direction. to reciprocate the ldipper stick21 in a manner a to ,move .the

.Ldippere22 inwardlytoward the boom 17.

.rOJoviously; if desired, ,the, sprockets. 34. and 35.may.beformedintegrally and. rotatably. mounted -on the 'ebioon,.pivot..shaft -..33 ,..but,. in the .present instance, .1 have.preferred to constitute the sprockets 34 and 35 and the shaft .33..asapower -,.transmitting .member ,mounted concentrically with. the boom;pivot, f or. transmitting 5 the power .from thedriving..me1nber.,3,0,to. the shipper shaft For qreversinguthe movementvof the shipper .shaft. 18 .an,d.,dipper.,'stick}21 ina manner to; im-

part a .crowding.,.orroutward movement of the stick and dipper 22, aback shaft 55 which functions as a reversing shaft is rotatably mountedin bearings 56 suitably positioned on the swing body or frame 10 andoperatively connected to the drum shaft 25 in a manner to be driventhereby through a pinion 57 secured to the shaft 55 by means of a key 58and adapted to mesh with the gear 28 secured to the drum shaft.

Rotatably mounted on the back shaft 55 is a driving member .or sleeve 59carrying -.a small sprocket fiozadapted to bewconnected by means of achain 61 with the relatively large removable .usprocket 32. secured tothe driving member or o'tally 'mounted-on' the ring 62 are a pluralityof.bell crank levers 64, the short arms of which are operativelyconnected to segmental clutch bands-65.adaptedtoengage a drum-66 carriedby.the-.-.drivingmember. or sleevev 59in a manner to cause the'sprocket.to rotate with the back shaft 55.

For operating the bell cranklevers 64, a drum ;67..-is. rotatably.mountedon thehub portion of .the-ring-62 anddntegrally associatedwiththe .drum 6'7 arena plurality of. cams 68 adapted to co-operate-withlanti-friction rollers mounted on the free ends of the long arms of thebell crank v-leversi64 in asmanner-to rock thebellcrank levers:abouttheir pivotal. connection with the ring 62, and :cause the bands65 to. engage thedrum 66, thereby connecting the shack shaft :55 andsprocket 60. v

,Fiorcoperating the-: cams..68. in.a manner to W establish the:connection between .the back shaft 55 and;sprocket 60,-.a band..69i-is.secured, at. one of its end portions,,=by. means ofa bolt-70, to a-.bracket 71= carried .-by .an upright i frame mem- ..ber:72,'..and..-at its. opposite end portion to an arm '73 secured to ashaft '74, rotatably mounted .-in-.-a; bracket-E 575 secured to the.frame member '72.

intermediate. portion. of. theband 69. is, positioned. adjacentrthe drum67 ina manner to retardthe rotation. of. the drumland. movement of thecams 68 carried thereby, when the band: 69 isr drawn intoengagementwiththe drum 67, thus causing the antiefriction rollers onthe bell cranklever 64. 00. move outwardly ontothe high sides. of .t-he cams in amanner. to vcausethe band 65 to engage the drumlfifi. Thereaftertheshaft55, ring .-62 and (drum-,6? will rotatetogether against theaction oftheband 65; thereby retaining. the cams fifliand bell cranklevers 64 in clutch-.bandoper- 'ating position,..and when the band-69 isdisengagedfrom-thedrum 67,.the springs 68a will act .tomovethecams68:forward1y-to their normal position thereby releasing thebands 65 fromen- ,gagement. with. the. drum 66. 1

For placing .a tensiononethe .band 69 in .a manner to .operatetheconnecting means between the .bac'krshaft 55 and sprocket 60, an arm.76 isflsecuredrto the .shaft74 and to its outer or free end ispivotally connected one end of a r levers64-as above described. a Itwill be observed by reference will be rocked in its bearings, therebytensioning the band'69 and-causing theintermediate partion thereof toimpinge-the drum 6'1 in a manner to retard the rotation of the drum andmovement of the cams68 for 'operating the ings, particularly Fi'gs.1,2,"3- and 4',-that the drum shaft 25 and back" shaft 55 arerotated inopposite directions and that by; connecting the driving member 30 to--'the' drum shaft 25, the

shipper shaft will be rotated in one direction at substantially'thespeed of r'otationof the drum shaft, and'the stile-K 21 and dipper 22moved rearwardly toward the'boorn, andthat by connecting the sprocket'60 to the back shaft, {the driving member 30 will be rotated' in'the'opposite direction; at a much reduced speedby reason 'of-j'the relativesizes of thesprocketfio and removable sprocket 32, and this reversemovement and reduced speed will be transmitted through'the chain 36,sprocket 34, shaft33, sprocket-"35, eh'aii'i '37 and sprocket 38 to theshipper shaft 18; thereby reversin therotation of the shipper shaft in amanner to movethe"stick 21 and. dipper 22 outwardly or away from theboom, and. imparting to the dipper a crowding motion at a speedconsiderably less than that ofthe shovel and stick in the oppositedirection.

It will be observed also from the foregoing description that movement ofthe lever 45 in one direction from its intermediate or normal positionshown in Figs. 1 and 2 will actuatethe connecting means between the drumshaft 25 and the driving member 30 in a manner to rotate the shippershaft and move the dipper stick in one direction, and that movement ofthe manually operated lever in the opposite direction from itsintermediate position will actuate the connecting means between the backshaft 55 and sprocket 60, in a manner to rotate the shipper shaft andmove the dipper stick in the opposite direction.

For securing the member 30 against rotation in either direction whendisconnected from both the shafts 25 and 55 a brake band 84 (Fig. 3)co-operable with the drum 41 may be connected in any suitable mannerwith the frame 10 and operated in any convenient manner, as for example,as is customary in machines of the character described, by a foot lever,or other suitable means.

For converting the power shovel shown in Fig. 1 and adapting it for useas a crane, the chain 36 may be removed and the sprocket 31 covered by asuitable drum lagging 85 (Figs. 6, 7 and 8) formed of a pair ofsegmental members 86 adapted to be positioned over and around thedriving.

member 30, and secured thereon by means of bolts 87 having its oppositeend portions provided with right and left hand screw threads adapted toco-operate with similarly threaded bosses. 88 formed on the inner sideof the respective segments 86, the middle or center portions of thebolts 87 being provided with enlarged polygonal shaped portions orshoulders 89 adapted to receive a tool for rotating the bolts in amanner to draw the segments 86 toward each other and into properposition around the driving member 30. Suitably positioned on the innersides of the segments 86, forming the drum lagging 85, are a pluralityof inwardly extending projections o'r lugs 90 adapted to co-operate withthe interdental spaces around the toothed sprocket 31 in a manner toprevent relative rotation of the to thedraw- 30. 'fIhis drumi laggingf35, [when the machine is adapted for use use crane, provides means usein-the operation of thecra'ne-L;

When the'drum' lagging 85 is mounted onthe driving member, the removablesprocket 32 may be disconnected and-removedj from the radially disposedfiange'QIfor'med on the'member30', and-inits stead an annularguardmember or ring 92 may be attached to' the'flange 91" to prevent thecable or the like wound on the drum lagging 85 from entering'theotherwiseopen space between the flange 91Yand the fi'ange 93 formedon a dru'm 94;-"-positioned on the shaft '25 adjacent the-member'30.

f Obviously, in converting the machine touse" as a crane, other andsuitable changes will be made, as, for-example, the'bo'om 1 7 willhereplaced bye. boom; of greater length and different construction, andcables'o'r ropes will be trained over suitable pulleys or the like forraising and lowering the boom'and for hoisting material to behandled.These; elements; however, have not beenshown-in the present instance, asthey-form no part of the present invention.

It will be observed from the foregoing'speciflcation that the presentinvention provides novel means for actuating the dipper sticks of power.

shovels and also provides a novel construction and arrangement forimparting an efficient crowding and retracting 'motion to the dipper anddipper stick, also that novel means are provided for adapting themachine for use as a crane and that machines of the character disclosedare improved in sundrydetails as heretofore described and particularlypointed'out i the appended claims.

Obviously, the present invention is not limited to the preciseconstruction and arrangement shown and described, as the same may bevariously modified. Moreover, all the features of the invention need notbe used conjointly as the same may be used to advantage in variouslydifferent combinations and sub-combinations.

What I claim as my invention and desire'to secure by Letters Patent is:i 1

1. In an excavating machine, a working platform, a boom pivoted thereonat two widely spaced points, a dipper handle slidable in the boom, ashipper shaft associated therewith to drive it, a jack shaft interposedbetween and concentric with the two pivot connections of the boom on theworking platform, a sprocket and chain drive interposed between theshipper shaft and the jack shaft and means for driving the jack shaft. r

2. In an excavating machine, a working platform, a boom pivoted thereonat two widely spaced points, a dipper handle slidable in the boom, ashipper shaft associated therewith to drive it, a jack shaft interposedbetween and concentric with the two pivot connections of the boom on theworking'platform, a sprocket and chain drive interposed between theshipper shaft and the jack shaft, and means for driving the jack shaft,said means comprising a reversing shaft, a sprocket and chain connectionbetween it and the jack shaft and means interposed between the reversingshaft and the motor for driving itv selectively in opposite directions.

3. In an excavating machine, a working platform, a boom pivoted thereon,the pivot connection between the boom and platform comprising two pairsof hingedly co-operating sepspaeembrackets on boom and; platform, hollow.pivot 'trunnions ,one vim each vpair (of brackets formed integrallywith. one of the brackets of each-pairto hold the brackets on boom andplatform together. relation, a dipper "handle slida-hle amtrotatable-onthe boom, 'a: :vshipper she-fit, I associated theremth; a

jack sha-fton the :platform I concentric withthe pivot axisof the boom.and: carried-.-by said hollow pivot tnunnions aancl -a V sprocket andchain connection :between the jack'shaft and. the ship per shaft. v v a4-. Inan: excavating'machine aworking plat:- -form-, a boompivoted;thereon the pivot conmotionbetween the boom and. platform comprising twopairs of hingedl-y oo-operatingrseparatespaced braoketsionboom and;plattorm,;hol- :lovwvpi-vottrunnions onefor each .pair of bracketsstormed) integrally with one pi thehbrackets: of each pa-intohold-the:brackets on boom-andt platform-together inhingi-ng relation, adipper:han- 'dleslidable and rotatableon the-boom,a shipper shatt associated-=therewith=, =a jaek shaft on the platform concentric-with the pivotaxis-of the .boomand a sprocket and ohainconneotion between the jackshaft-and theshipper-shaft the expensive jack sshattcbeing mounted atits extremities; :in the hollow pivot trumiionst-and. extending betweenthetwo: points :wheretha :hoom :ispivoted .on-thezplatiorm. v

5; In anexcavatingmachine,v a working plat,- form, a boompivotedthereon, the'pivot. connecwtion between the-boom and' platformcomprising two pairs of hingedly co-operating separate spacedbracketson-boom and platform, hollow pivot trunnions one for each pairof brackets vformeel integrally with each -of the brackets on theplatform to hold the brackets on boom, and platform together, a dipperhandle slidable and rotatable on the boom, a shipper shaftassociatecltherewith, a jack shaft on the platform concentric with thepivot axis of the boom-.and carried by said hollow pivot trunnions asprocket and chain-aconnection. between the jack shaft andthe shippershaft, the jack shaft being mounted. at its extremitiesin saidhollowapivot trunnions andextendi-ng between the two points wheretheboomis pivoted on the platform, and driving means for the jackshaftincluding a reversing shaft.

EDMUNDF JOSEPH KANE.

